Sky channels are freezing, and a message keeps appearing tell me of signal issues

[NickLee5]

SkyQ is freezing then telling me of signal problems. Started a couple of months ago but has been intermittent until today. Today I cannot watch anything. 

[Daniel0210]

@NickLee5 

Two possible error messages; no signal and no satellite signal. 

If you’re seeing a message displaying ”No signal” it tends to be from your TV not being on the correct input (check the HDMI cable between the Sky Q box and your TV)

Whenever a “no satellite signal” message is displayed, that relates to your Sky Q box, so firstly check that the connections from the Sky dish going into the back of your Sky Q box are still finger tight. Also check out the troubleshooting on this link
https://www.sky.com/help/articles/sky-tv-no-satellite-signal-sky-q
It may then give you the opportunity to arrange an engineer to check the alignment of your dish.

A misalignment is not necessarily something that will be visible to the naked eye and could only affect one or two channels. If you’re on a communal dish you may initially need to liaise with your landlord or building management company.

[NickLee5]

It says "No satellite signal". Have checked connections are finger tight, and they are. Will follow that link you sent and see if I can get an engineer out to check dish. Thank you for your prompt response. 

[NickLee5]

Just found the problem. A tree has grown in front of the dish. Will talk to neighbour to seek permission to trim it. 

[NickLee5]

Tree 'trimmed', problem resolved. Thanks all for the support.